North Korea tests nuclear device

CaptionPyongyang railway station

AFP / Getty Images

North Koreans watch an announcer reading a statement on the country's nuclear test on a large screen in front of Pyongyang's railway station. A defiant North Korea on Tuesday staged its most powerful nuclear test yet and warned of "stronger" action to follow if the ensuing wave of global...

North Koreans watch an announcer reading a statement on the country's nuclear test on a large screen in front of Pyongyang's railway station. A defiant North Korea on Tuesday staged its most powerful nuclear test yet and warned of "stronger" action to follow if the ensuing wave of global... (AFP / Getty Images)